Students will launch the project by collecting, predicting, testing, and visually sorting five safe objects before discovering the floating-carrier design challenge.

Students will investigate how shape affects floating, define the carrier criteria with visual symbols, create two different picture plans, and use evidence and peer feedback to choose and revise a shared team design.

Students will use their selected picture plans to build, test, revise, and retest a small floating carrier. Through adult-supported fair tests, picture evidence, peer feedback, and a change-over-time chart, teams will determine whether their carriers float, hold a large teacher-selected weight unit, and fit inside an 8.5-by-11-inch outline.

Students will present, test, and reflect on their improved floating carriers during a family and Coast Guard showcase.